Structural characterization and physicochemical properties of arrowhead resistant starch prepared by different methods.

Resistant starch (RS) served as a novel functional ingredient has attracted much attention. In this paper, the structure and physicochemical properties of arrowhead resistant starch (ARS) prepared by subcritical water (SW-ARS), ultrasound-subcritical water (USW-ARS), autoclaving (AM-ARS) and ultrasound-autoclaving (UAM-ARS) were investigated. The results showed that the structure of starch granules was completely disrupted and the size of starch granules was obviously increased. SW-ARS, USW-ARS, AM-ARS and UAM-ARS exhibited a B-type crystallinity pattern with different degree of crystallinity. UAM-ARS displayed the highest molecular order with the highest degree of double helixes while SW-ARS, USW-ARS and AM-ARS showed a lower degree of molecular order than that of arrowhead native starch (ANS). The ANS and ARS prepared by four methods possessed high gelation enthalpy in which UAM-ARS had the highest gelation enthalpy, indicating that they had excellent thermostability. Therefore, ANS and the resulting ARS may be a promising starch-based material. All these results are expected to provide information on the preparation and application of ANS and ARS. Copyright © 2020 Elsevier B.V. All rights reserved.

Citation

Wei Qin, Chaoting Wen, Jixian Zhang, Courage Sedem Dzah, Haihui Zhang, Yuanqing He, Yuqing Duan. Structural characterization and physicochemical properties of arrowhead resistant starch prepared by different methods. International journal of biological macromolecules. 2020 Aug 15;157:96-105

Mesh Tags

Substances

PMID: 32330497

search → result